Run: 2026-06-01-01KT1J1B9KQRAEK8X7M53Y41WM

Run Details

Duration:
42.8s
Cost:
$0.064650
Provider:
Anthropic

Model input

System
You are an expert novelist with a gift for vivid, immersive prose. You write in tight third-person limited point of view with a strong narrative voice. Your prose is clean, precise, and engaging — you favor strong verbs, concrete details, and natural-sounding dialogue. You will be given a story bible (codex) containing canonical details about characters, locations, items, and lore. Use these details to ground your writing in the established world. Stay consistent with the codex. Write only the prose of the scene. Do not include titles, chapter headings, markdown formatting, or any commentary before or after the scene.
User/Human
<codex> <character id="4412" name="Aurora Carter" aliases="Rory, Laila, Aurora, Carter, Malphora" pronouns="she/her" species="Human" storyRole="Protagonist"> <eyeColor>bright blue</eyeColor> <hair>straight shoulder-length black</hair> <height>5'6"</height> <age>25</age> <scar>small crescent-shaped scar on her left wrist from a childhood accident</scar> <description>Aurora, referred to by her friends as Rory, is cool-headed, intelligent, and known for quick out-of-the-box thinking.</description> <backstory>Born in Cardiff to an Irish barrister father (Brendan Carter) and Welsh teacher mother (Jennifer Carter née Ellis), Rory reluctantly pursued Pre-Law at Cardiff University. She fled to London at the behest of her childhood friend Eva after leaving an abusive ex named Evan. By day, Rory works part-time as a delivery person for Yu-Fei Cheung's Golden Empress restaurant. She lives in a flat above Silas' bar.</backstory> </character> <location id="861" name="The Fae Grove" aliases="Isolde's grove, Richmond grove, the Grove" realm="Earth (Fae-touched)"> <parkLocation>Richmond Park</parkLocation> <standingStones>ancient oak standing stones mark the boundary</standingStones> <timeBehavior>time moves differently — an hour inside can be minutes or days outside</timeBehavior> <flora>wildflowers bloom year-round</flora> <description>A hidden clearing that exists in a pocket between Earth and the Fae realm.</description> </location> <item id="2001" name="Heartstone Pendant" aliases="the pendant, Heartstone" type="Artifact" origin="Dymas"> <gemstoneColor>deep crimson</gemstoneColor> <chainMaterial>silver chain</chainMaterial> <size>roughly the size of a thumbnail</size> <behavior>pulses faintly with warmth when near a Hel portal</behavior> <glow>faint inner glow</glow> <description>Given to Aurora by an unknown benefactor.</description> </item> </codex> Write a fully fleshed out scene of at least 1000 words in the horror genre. A character is alone in a strange, isolated place at night. They came here for a reason, but something feels off from the moment they arrive. The wrongness builds slowly — sounds that shouldn't be there, things that move at the edge of vision, a growing certainty that they are not alone. Build tension through restraint, not through gore. Use the codex entries above as your world reference for the character and setting. Only include the prose of the scene without any markdown or commentary.

Model response

AI
The standing stones were not where Rory remembered them. She was certain of that much, at least, though certainty had become a slippery thing the deeper she walked into Richmond Park. The oaks marking the grove's boundary had stood in a loose circle the last time Eva brought her here, gnarled and patient, their roots breaking the turf like the knuckles of buried giants. Now they seemed to lean inward, crowding the gap she'd slipped through, and when she glanced back over her shoulder the moonlight pooled strangely between their trunks, silvering the grass into something that looked less like a path and more like a closing mouth. She'd come for answers. That was what she kept telling herself. The pendant had begun pulsing two nights ago — a slow, arrhythmic warmth against her sternum that woke her from sleep, that made her press her palm flat to her chest as though she could feel a second heart beating beneath her own. Silas had no explanation. Eva, infuriatingly, had only gone quiet and said the grove sometimes answered questions if you asked them in the right place. So here Rory stood, twenty-five years old and well past believing she could be frightened by a clearing full of flowers, waiting for the world to make sense. The flowers, at least, were exactly as she'd been told. Wildflowers bloomed in defiance of the November cold, foxglove and meadowsweet and others she had no names for, their petals open and luminous in a way that had nothing to do with the moon. They glowed faintly from within, the way the Heartstone glowed, and the resemblance unsettled her more than she wanted to admit. She crouched and touched one. It was warm. "All right," she said aloud, and her voice came out thin. The grove swallowed it. There was no echo, no carrying of sound across the open space — the words simply left her mouth and vanished, as though the air here had texture, density, a willingness to absorb whatever she gave it. "I'm here. You wanted me here." Nothing answered. The wildflowers nodded on a breeze she could not feel. It was the silence she noticed first. Richmond Park was never truly quiet, not even in the small hours — there was always the distant grumble of the city, the A-road hum, the occasional cry of a fox or the shuffle of deer through bracken. But standing in the center of the grove, Rory realized she had walked out of all of it. No traffic. No wind in the high branches. Not even her own pulse in her ears, which should have been hammering, because some animal part of her had already understood what the rest of her was still refusing to. She was not alone. The certainty arrived without evidence, the way a draft tells you a door has opened somewhere behind you. The skin between her shoulder blades drew tight. She straightened slowly, deliberately, and turned a full circle, scanning the tree line. Empty. Stones and oaks and the soft phosphorescence of impossible flowers. "Hello?" Her breath ghosted white in front of her, and she watched it hang there far too long, refusing to disperse, a small pale cloud suspended at eye level. When it finally thinned and faded she was looking through it at the gap between two stones, and in that gap something moved. Not toward her. Across. A vertical shape, tall and narrow, sliding from the shelter of one trunk to the next with a smoothness that no walking thing achieved. She caught it only at the edge of her vision, the way you catch a floater in your eye, and when she snapped her gaze directly to it there was nothing — only the bark, the moonlight, the patient dark between. The pendant pulsed. It was different now. Not the slow drowsy warmth that had woken her at home, but a sharp, insistent throb, hot enough that she pressed her hand over it through her jumper and felt the crimson stone radiating like a coal. *Pulses faintly with warmth when near a Hel portal.* The words surfaced from some half-remembered conversation, Silas frowning over the pendant in the amber light of the bar, and her stomach dropped through the warm grass and the cold ground beneath it. A portal. Not answers. A door, and something on the other side of it that had been waiting for her to bring the key. "That's not—" She backed up a step, and her heel caught on a root that she was almost sure hadn't been there. "That's not what I came for." The flowers had stopped glowing. She didn't see them go dark; she simply registered, between one heartbeat and the next, that the light was gone, and the grove had sunk into a blue-black gloom in which the standing stones loomed like the pillars of a roofless church. The temperature dropped. Her breath came faster now, ragged little clouds, and each one hung and lingered and then drifted — not away, she realized, but *toward* the gap in the stones, as if the air itself were being drawn somewhere, inhaled by the dark. Something exhaled back. It was the faintest sound — a long, low expulsion, more felt than heard, vibrating up through the soles of her boots. The kind of breath a very large thing takes when it has all the time in the world. And on the heels of it came a smell: cold earth, copper, and beneath that something floral and sweet and rotten, like the wildflowers had bloomed and died and bloomed again in the space of seconds. Rory turned to run and found the gap she'd entered by was gone. She knew the oaks had been there. She'd marked the one with the lightning scar, told herself *that's the way out*, the small careful habit of a woman who had once needed to know all the exits in a flat she shared with Evan. But the scarred oak was nowhere. The circle of trees had drawn closed, trunk to trunk, an unbroken palisade, and the grass at her feet had stopped looking like grass at all. Across the clearing, in the gap between the two farthest stones, the darkness was no longer empty. It did not step forward. It did not need to. It simply resolved, the way an image resolves when your eyes finally make sense of it — a tall narrow column of deeper black, head bowed beneath the lintel of stone, patient, attentive, *pleased*. She could not see its face. She was profoundly grateful she could not see its face. The Heartstone burned against her chest like a brand, pulsing in time with that slow enormous breathing, and Rory understood, with the cold clarity that had carried her out of Cardiff and across a dark city and into this clearing she should never have entered, that the pendant had not been warning her. It had been calling. She did not scream. There was no one to hear it, and some instinct older than language told her that screaming was exactly what the thing in the gap was waiting for — the first gift she would give it, freely, the sound it would draw down into the dark along with her breath and her warmth and everything else. So she pressed her lips together, wrapped her fist around the burning stone, and made herself very, very still. The grove held its breath with her. And then, somewhere in the dark beyond the stones, something began — slowly, carefully, deliberately — to walk toward her across grass that made no sound at all.
created_at"2026-06-01T12:20:17.387Z" 6/1/2026, 12:20:17 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3089
moderation_latency(null)
generation_time42669
tokens_prompt812
tokens_completion1894
native_tokens_prompt1170
native_tokens_completion2352
native_tokens_completion_images(null)
native_tokens_reasoning53
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.06465
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provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
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is_byokfalse
latency1273
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
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request_id"req-1780316417-xCR6orhjPW39zgmjZGaA"
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api_type"completions"
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upstream_id"msg_017yg7ohk6BAYPYrKrD6wMuZ"
total_cost0.06465
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provider_name"Anthropic"
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Evaluation details

Result Evaluator Details Meta Data
0.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags2
adverbTagCount1
adverbTags
0"she said aloud [aloud]"
dialogueSentences5
tagDensity0.4
leniency0.8
rawRatio0.5
effectiveRatio0.4
64.59% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1271
totalAiIsmAdverbs9
found
0
adverb"truly"
count1
1
adverb"slowly"
count2
2
adverb"deliberately"
count2
3
adverb"very"
count3
4
adverb"carefully"
count1
highlights
0"truly"
1"slowly"
2"deliberately"
3"very"
4"carefully"
100.00% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.00% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
33.12% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1271
totalAiIsms17
found
0
word"warmth"
count4
1
word"could feel"
count1
2
word"unsettled"
count1
3
word"echo"
count1
4
word"silence"
count1
5
word"pulse"
count1
6
word"scanning"
count1
7
word"pulsed"
count1
8
word"throb"
count1
9
word"stomach"
count1
10
word"gloom"
count1
11
word"loomed"
count1
12
word"resolved"
count1
13
word"sense of"
count1
highlights
0"warmth"
1"could feel"
2"unsettled"
3"echo"
4"silence"
5"pulse"
6"scanning"
7"pulsed"
8"throb"
9"stomach"
10"gloom"
11"loomed"
12"resolved"
13"sense of"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"stomach dropped/sank"
count1
highlights
0"stomach dropped"
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells1
narrationSentences72
matches
0"y with warmth"
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount1
narrationSentences72
filterMatches(empty)
hedgeMatches
0"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences75
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen55
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans4
markdownWords15
totalWords1281
ratio0.012
matches
0"Pulses faintly with warmth when near a Hel portal."
1"toward"
2"that's the way out"
3"pleased"
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions3
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions19
wordCount1264
uniqueNames10
maxNameDensity0.4
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Rory5
Richmond2
Park2
Eva2
November1
Heartstone2
Hel1
Silas2
Evan1
Cardiff1
persons
0"Rory"
1"Eva"
2"Heartstone"
3"Silas"
4"Evan"
places
0"Richmond"
1"Park"
2"Hel"
3"Cardiff"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences50
glossingSentenceCount0
matches(empty)
43.87% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches2
per1kWords1.561
wordCount1281
matches
0"Not the slow drowsy warmth that had woken her at home, but a sharp, insistent throb, hot enough"
1"not away, she realized, but *toward* the gap in the stones, as if the air itself were be"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences75
matches
0"entered, that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs33
mean38.82
std32.94
cv0.849
sampleLengths
09
199
211
396
465
58
658
712
8102
94
1039
1111
121
1351
1469
153
1683
1724
1828
195
2087
213
2276
2313
2476
2517
2660
2753
284
2960
3019
317
3228
85.77% Passive voice overuse
Target: ≤2% passive sentences
passiveCount4
totalSentences72
matches
0"been told"
1"was gone"
2"being drawn"
3"was gone"
96.37% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs193
matches
0"was still refusing"
1"was looking"
2"was waiting"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount10
semicolonCount1
flaggedSentences10
totalSentences75
ratio0.133
matches
0"The pendant had begun pulsing two nights ago — a slow, arrhythmic warmth against her sternum that woke her from sleep, that made her press her palm flat to her chest as though she could feel a second heart beating beneath her own."
1"There was no echo, no carrying of sound across the open space — the words simply left her mouth and vanished, as though the air here had texture, density, a willingness to absorb whatever she gave it."
2"Richmond Park was never truly quiet, not even in the small hours — there was always the distant grumble of the city, the A-road hum, the occasional cry of a fox or the shuffle of deer through bracken."
3"She caught it only at the edge of her vision, the way you catch a floater in your eye, and when she snapped her gaze directly to it there was nothing — only the bark, the moonlight, the patient dark between."
4"She didn't see them go dark; she simply registered, between one heartbeat and the next, that the light was gone, and the grove had sunk into a blue-black gloom in which the standing stones loomed like the pillars of a roofless church."
5"Her breath came faster now, ragged little clouds, and each one hung and lingered and then drifted — not away, she realized, but *toward* the gap in the stones, as if the air itself were being drawn somewhere, inhaled by the dark."
6"It was the faintest sound — a long, low expulsion, more felt than heard, vibrating up through the soles of her boots."
7"It simply resolved, the way an image resolves when your eyes finally make sense of it — a tall narrow column of deeper black, head bowed beneath the lintel of stone, patient, attentive, *pleased*."
8"There was no one to hear it, and some instinct older than language told her that screaming was exactly what the thing in the gap was waiting for — the first gift she would give it, freely, the sound it would draw down into the dark along with her breath and her warmth and everything else."
9"And then, somewhere in the dark beyond the stones, something began — slowly, carefully, deliberately — to walk toward her across grass that made no sound at all."
93.93% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount1257
adjectiveStacks0
stackExamples(empty)
adverbCount59
adverbRatio0.046937151949085126
lyAdverbCount23
lyAdverbRatio0.018297533810660304
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences75
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences75
mean17.08
std14.69
cv0.86
sampleLengths
09
122
233
344
44
57
643
74
821
928
1010
1134
1221
135
143
1511
164
1737
186
192
2010
217
2238
2318
242
256
2631
274
2818
298
3013
311
3210
331
3428
3523
363
371
3824
3941
403
414
4237
4342
442
452
4620
4722
486
495
55.11% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats7
diversityRatio0.38666666666666666
totalSentences75
uniqueOpeners29
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences66
matches(empty)
ratio0
68.48% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount25
totalSentences66
matches
0"She was certain of that"
1"She'd come for answers."
2"They glowed faintly from within,"
3"She crouched and touched one."
4"It was warm."
5"she said aloud, and her"
6"It was the silence she"
7"She was not alone."
8"She straightened slowly, deliberately, and"
9"Her breath ghosted white in"
10"She caught it only at"
11"It was different now."
12"She backed up a step,"
13"She didn't see them go"
14"Her breath came faster now,"
15"It was the faintest sound"
16"She knew the oaks had"
17"She'd marked the one with"
18"It did not step forward."
19"It did not need to."
ratio0.379
73.64% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount51
totalSentences66
matches
0"The standing stones were not"
1"She was certain of that"
2"The oaks marking the grove's"
3"She'd come for answers."
4"That was what she kept"
5"The pendant had begun pulsing"
6"Silas had no explanation."
7"Eva, infuriatingly, had only gone"
8"The flowers, at least, were"
9"Wildflowers bloomed in defiance of"
10"They glowed faintly from within,"
11"She crouched and touched one."
12"It was warm."
13"she said aloud, and her"
14"The grove swallowed it."
15"The wildflowers nodded on a"
16"It was the silence she"
17"Richmond Park was never truly"
18"She was not alone."
19"The certainty arrived without evidence,"
ratio0.773
75.76% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount1
totalSentences66
matches
0"Now they seemed to lean"
ratio0.015
0.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences39
technicalSentenceCount10
matches
0"The oaks marking the grove's boundary had stood in a loose circle the last time Eva brought her here, gnarled and patient, their roots breaking the turf like th…"
1"Now they seemed to lean inward, crowding the gap she'd slipped through, and when she glanced back over her shoulder the moonlight pooled strangely between their…"
2"The pendant had begun pulsing two nights ago — a slow, arrhythmic warmth against her sternum that woke her from sleep, that made her press her palm flat to her …"
3"Wildflowers bloomed in defiance of the November cold, foxglove and meadowsweet and others she had no names for, their petals open and luminous in a way that had…"
4"Not even her own pulse in her ears, which should have been hammering, because some animal part of her had already understood what the rest of her was still refu…"
5"Not the slow drowsy warmth that had woken her at home, but a sharp, insistent throb, hot enough that she pressed her hand over it through her jumper and felt th…"
6"Her breath came faster now, ragged little clouds, and each one hung and lingered and then drifted — not away, she realized, but *toward* the gap in the stones, …"
7"She'd marked the one with the lightning scar, told herself *that's the way out*, the small careful habit of a woman who had once needed to know all the exits in…"
8"The Heartstone burned against her chest like a brand, pulsing in time with that slow enormous breathing, and Rory understood, with the cold clarity that had car…"
9"And then, somewhere in the dark beyond the stones, something began — slowly, carefully, deliberately — to walk toward her across grass that made no sound at all…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags2
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags1
fancyCount0
fancyTags(empty)
dialogueSentences5
tagDensity0.2
leniency0.4
rawRatio0
effectiveRatio0
76.3551%